linux-kernel - Re: [PATCH 2/2] sound: make OSS device number claiming optional

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Date:	Wed, 5 Aug 2009 18:01:20 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Tejun Heo <teheo@...e.de>
Cc:	Greg KH <greg@...ah.com>, Al Viro <viro@....linux.org.uk>,
	Takashi Iwai <tiwai@...e.de>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	cguthrie@...driva.org
Subject: Re: [PATCH 2/2] sound: make OSS device number claiming optional

> 1. Merge the weird switch thing and the extra standard chrdev module
>    alias patch

Might as well fake the normal aliases in soundcore if loaded rather than
pollute chardev with it but otherwise I think we agree.

> 2. Add to feature-removal that snd-slot/service-* are going away in a
>    year along with the weird switches.  This allows people who wish to
>    try or switch in the meantime to do so.

Yep

> 3. After a year, drop module loading related code from sound_core
>    along with the weird config option and kernel parameter.

Do we need soundcore at all at that point ? It seems phase 3 is "move any
needed logic to ALSA oss emulation and kill it off"

> In the end, the only choice we have to make is whether to keep
> snd-slot/service-* aliases.  If we're gonna (I don't see why tho), the

I think we need to for a year or so - and its trivial to do so.

> cleanest way would be to teach chrdev about aliases.  If not, the best
> way is to add a switch so that it can be phased out gradually.

In the mean time if you are grabbing just some minors sound_core.c:chains
also needs keeping in sync with direct character range grabs because your
CUSE based device might grab some minors before sound_core, and then it
appears tears will result ?

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